Rebar B500B – The Ultimate High-Strength Reinforcement for Modern Construction

Rebar B500B is one of the most trusted and widely used steel grades in the construction world.
With a guaranteed yield strength of 500 MPa and exceptional ductility, it provides the perfect balance of performance, reliability, and safety for modern reinforced concrete structures.

Whether it’s a residential high-rise, a bridge, or an industrial complex, B500B ensures that every project stands the test of time.

What Is Rebar B500B?

Rebar B500B is a hot-rolled ribbed reinforcement steel bar produced according to EN 10080 and BS 4449 standards.
The “B” in its name refers to its ductility class, meaning it can deform without losing strength — a critical property in earthquake-resistant and high-load structures.

Its mechanical properties are achieved through thermo-mechanical treatment (TMT), combining rapid quenching and tempering to produce a tough, flexible surface over a strong core.

Key Mechanical and Chemical Properties

• Yield Strength: ≥ 500 MPa

• Tensile Strength: ≥ 540–600 MPa

• Elongation (A5): ≥ 14–16 %

• Modulus of Elasticity: 200 GPa

• Bend & Re-bend Test: Passes 180° without cracking

• Chemical Composition (max %): C 0.24 | Mn 1.5 | Si 0.55 | P 0.05 | S 0.05

These values make B500B stronger and more reliable than older grades such as B420 or A400.

Why Engineers Prefer B500B

1. High Strength-to-Weight Ratio: Allows for lighter designs with fewer bars while maintaining structural integrity.

2. Excellent Weldability: Low carbon equivalent (CE ≤ 0.5) ensures clean welding with standard electrodes.

3. Superior Ductility: Prevents brittle failure during earthquakes or heavy loading.

4. Corrosion Resistance: Can be supplied as epoxy-coated or galvanized for harsh environments.

5. Consistency and Standardization: Fully compliant with EN and BS requirements for global trade.

Manufacturing Process

1. Steelmaking: High-purity billets are melted in an Electric Arc Furnace (EAF) or Basic Oxygen Furnace (BOF).

2. Hot Rolling: Billets are rolled through mills to desired diameters (8–40 mm).

3. TMT Process: Rapid quenching forms a hardened surface; the core remains soft for flexibility.

4. Cooling & Cutting: Bars are straightened, cooled, and cut into 6 m or 12 m lengths.

5. Quality Testing: Each batch undergoes tensile, bend, and chemical tests before certification.

Common Applications

• High-Rise Buildings – Foundations, columns, slabs, and beams

• Infrastructure Projects – Bridges, tunnels, highways

• Industrial Complexes – Warehouses and heavy-load floors

• Seismic Zones – Earthquake-resistant frameworks

• Prefabricated Concrete Elements – Piles, panels, and girders

Available Sizes & Packaging

Rebar B500B is produced in 8 mm to 40 mm diameters, supplied in straight lengths (6–12 m) or coils (≤ 16 mm).
Export packaging usually includes bundles of 1–3 MT, tagged with heat numbers and certifications.

Standards and Certifications

• EN 10080: 2005 – Steel for the reinforcement of concrete

• BS 4449: 2005 + A3: 2016 – Carbon steel bars for reinforcement

• ISO 6935-2 – Hot-rolled ribbed bars

• CE Marking & Third-Party Inspection available upon request

Market Demand and Supply Insights

With the global shift toward urbanization and infrastructure growth, B500B rebar has become a standard choice across Europe, the Middle East, and Africa.
Its uniform performance and cost-effectiveness make it ideal for export from production hubs like Turkey and the UAE to markets in Ghana, Kenya, India, and Brazil.

Average international prices (2025) range between USD 520–600 per MT FOB, depending on size and surface treatment.

Frequently Asked Questions (FAQ)

1. What is the difference between B500B and B500C?
B500C has slightly higher ductility (≥ 7.5 % total elongation) for severe seismic zones, but B500B is sufficient for most projects.

2. Is B500B suitable for welding?
Yes, its low carbon equivalent ensures excellent weldability without pre-heating.

3. What surface treatments are available?
Black, epoxy-coated, or hot-dip galvanized depending on environmental requirements.

4. Can it be used in marine structures?
Yes, if coated with galvanized zinc or epoxy to prevent chloride corrosion.

5. Which standards does it meet?
EN 10080, BS 4449, ISO 6935-2, and CE certifications are all applicable.